Insulator structure introduction: The insulator is made of porcelain parts and upper and lower metal accessories with adhesive. The end face of the porcelain part and the metal attachment adhesive contact parts are padded with elastic pads, and the glue parts of the porcelain part are respectively made of sand, knurled, grooving and other structures to ensure mechanical strength and prevent loosening and torsion. The surface of the porcelain parts is evenly coated with white glaze, and the surface of the metal accessories is coated with gray enamel. Insulator porcelain main structure cavity partition (breakdown type) structure and solid (non-breakdown type) structure two. Combined adhesive post insulators are generally solid core non-breakable structure. The latter structure is higher than the former structure, and less maintenance test work is required. Insulator porcelain main structure cavity partition (breakdown type) structure and solid (non-breakdown type) structure two. Combined adhesive post insulators are generally solid core non-breakable structure. Insulator porcelain shape has two kinds of multi-edge or less edge, multi-edge increases the surface distance, electrical performance is better than less edge, in addition to the phasing out of the external glue post insulator, the rest of the products are multi-edge. As the metal accessories are glued into the porcelain holes, the insulation distance is correspondingly increased, the electrical performance is improved, and the space occupied by the installation is also reduced. However, because the internal adhesive installation is unfavorable to improving the mechanical strength, the insulators with higher mechanical strength requirements should be combined with the adhesive installation (that is, the upper accessories are affixed with the inner adhesive installation, and the lower accessories are affixed with the outer adhesive installation).